GGG Kids Child Scooter Roller Inline Skate Skateboard BMX Cycling Helmet Medium Size(Blue) Outer Material:ABS Advanced Engineering Plastic(Platingj Mesochite Material:Black EPS(High-density Foam),Soft and comfotable Size:One size fit most(fits for the people whose head size is under 58cm ) Meet Occident Standards(CE/CPSC) Package Content: 1 X Helmet